said by TKJunkMail :

Looks like the GigaOM news tip that Comcast is starting up a Wireless division is based purely on the fact that they hired an executive with wireless experience. It doesn't look like it is based on any other info.

Hot on the heels of a report that Comcast will no longer offer Sprint’s wireless service through Pivot, GigaOM has learned that the cable company is creating its own wireless division and has hired the former CTO of Telefonica O2 Europe, Dave Williams, as the unit’s CTO SVP of wireless and technology strategy to “explore wireless options” for Comcast, according to the company. Williams apparently took on the role earlier this month, although no announcement has been made to that effect and Comcast has not responded to a request for comment.

A WiMAX joint venture, a buyout of Sprint or T-Mobile, or perhaps some crazy satellite scheme could justify the creation of wireless division at Comcast be some of the “options” Comcast is exploring.